There is no solution for old age. Get a newer calculator.

Texas... | 673 views | 0 helpful votes

The - key is for subtraction, an operation that needs two numbers. If you press - as the first key on a line, the calculator assumes you want to subtract something from the previous answer, Ans.

If you want to enter a negative number, use the (-) key on the bottom row of the keyboard, just to the left of the Enter key.

If you want to enter a negative number, use the (-) key on the bottom row of the keyboard, just to the left of the Enter key.

Texas... | 98 views | 0 helpful votes

Just divide the numerator by the denominator. For example, to convert 1/4 to decimal, press 1 / 4 ENTER and see .25

Texas... | 372 views | 0 helpful votes

Every time you change batteries this will happen to you. First press 2nd then press and hold the down arrow. Hold until their is no black in the background but you can still see the numbers on the screen.

Texas... | 459 views | 0 helpful votes

Error 07 Syntax

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Texas... | 166 views | 0 helpful votes

Error 07 Syntax

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Texas... | 142 views | 0 helpful votes

Error 07 Syntax

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Texas... | 137 views | 0 helpful votes

See cap image below

Texas... | 101 views | 0 helpful votes

Read on how to set up calculator for graphing. And check your input.

Texas... | 94 views | 0 helpful votes

You can type in an x-variable by pressing the x-var key.

For other graph types, the variables r, theta, t, can be enter by pressing the appropriate function key. from the graph equation entry screen.

For other graph types, the variables r, theta, t, can be enter by pressing the appropriate function key. from the graph equation entry screen.

Texas... | 72 views | 0 helpful votes

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

Texas Instruments TI-86 Calculator | Uploaded on Jan 05, 2014

326 questions posted

Usually answered in minutes!

1,906 Questions

1,902 Questions

1,033 Questions

876 Questions

538 Questions